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Location Folder Show Tree ROOT ScienceBase Catalog Users Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Downloadable (2) GeoTIFF (2) Map Service (2) OGC WFS Layer (2) OGC WMS Layer (2) OGC WMS Service (2) Raster (2) Contacts Carl J Legleiter U.S. Geological Survey U.S. Geological Survey - ScienceBase Water Resources Paul J Kinzel More... Categories Data (2) Tag Types Theme (2) Place (2) Tag Schemes None (1) View Results as: JSON ATOM CSV Browse Folder

Geo-referenced orthophotos of the Tanana River, Alaska, acquired July 24, 2019 This data release consists of an orthophoto of the Tanana River in Alaska acquired on July 24, 2019. The orthophoto was produced from images obtained using a Hasselblad A6D-100C 100 megapixel digital mapping camera deployed within a pod mounted on the landing gear of a Robinson R44 helicopter. Images were acquired as the helicopter transited a series of flight lines designed to provide complete coverage, with ample overlap, of the study area along the Tanana River. Also within the pod was an ATLANS GPS/Inertial Motion Unit (IMU) that recorded the position and orientation of the platform during the flight. This information was used to geo-reference the images by performing aerial triangulation and bundle adjustment... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Raster; Tags: Alaska, Geo-referencing, Image, Nenana, Orthophotography, All tags... Remote sensing, River, Surface flow velocity, Tanana River, Fewer tags Topo-bathymetric digital elevation models of the upper Merced and Tuolumne Rivers in California derived from hyperspectral image data and near-infrared LiDAR acquired in 2014 This child data release includes fused topo-bathymetric digital elevation models of the Merced and Tuolumne Rivers in California used to support research on anadromous salmonids. The purpose of this study was to calculate the capacity for reintroduction of salmonids above impassable barriers. Airborne, near-infrared (NIR) LiDAR and hyperspectral imagery were acquired simultaneously in September 2014 from a Cessna Caravan, with the LiDAR data used to map topography of dry land and the imagery used to map water depth in the wetted channel. Topo-bathymetric DEMs of channels and floodplains with 1-m resolution were constructed for the study reaches by using remotely sensed hyperspectral image data to estimate water... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Raster; Tags: Bathymetry, California, Cherry Creek, Clavey River, Digital elevation model (DEM), All tags... Floodplain, LiDAR, Merced River, River channel, Sierra Nevada, South Fork Merced River, Topo-bathymetric, Topography, Tuolumne River, Fewer tags